I have had a TS-MPPT-45 on my system for over 9 years now. Had to do some other work on the system the other day and became suspicious of the output so connected up MSView and looked at the figures. Array current readings are very wrong - showing around 30A when the array is under 9A short circuit. And then sometimes showing it as a negative figure. The controller is still producing power, but I'm guessing the MPPT algorithm is messed up by the bad array current readings. See attached log graphs comparing similar time of day/month from 2014 compared to now (2023).
Has anybody seen this before? I'm guessing there's not much to be done except to retire it or live with it?
Has anybody seen this before? I'm guessing there's not much to be done except to retire it or live with it?
